package com.phei.netty.codec.marshalling;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

import java.util.concurrent.CountDownLatch;


public class Client {


    public static void main(String[] args) throws Exception {
        int port = 8080;
        new Client().connect(port, "127.0.0.1");
    }

    public void connect(int port, String host) throws Exception {
        // 配置客户端NIO线程组
        EventLoopGroup group = new NioEventLoopGroup();
        final CountDownLatch countDownLatch = new CountDownLatch(1);
        final SubReqClientHandler subReqClientHandler = new SubReqClientHandler(countDownLatch);
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch)
                                throws Exception {
                            ch.pipeline().addLast(
                                    MarshallingCodeCFactory
                                            .buildMarshallingDecoder());
                            ch.pipeline().addLast(
                                    MarshallingCodeCFactory
                                            .buildMarshallingEncoder());
                            ch.pipeline().addLast(subReqClientHandler);
                        }
                    });

            // 发起异步连接操作
            ChannelFuture f = b.connect(host, port).sync();

            // 当代客户端链路关闭
            f.channel().closeFuture().sync();
            countDownLatch.await();
        } finally {
            // 优雅退出，释放NIO线程组
            group.shutdownGracefully();
        }
    }
}
